Milky Oil and coolant in #7, am I screwed or what? - Team Camaro Tech
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post #1 of 27 (permalink) Old May 9th, 05, 03:13 PM Thread Starter
 
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Milky Oil and coolant in #7, am I screwed or what?

Ok this is a break in of a brand new stroker. As far as I know the heads were assembled, torqued properly. I installed the manifold myself and feel good about that. The motor ran fine and after getting the radiator topped off correctly (this is where I'm scared b/c it took 3 different heat up and cool down sessions before it didn't drop off anymore) So after that it help temp right around 195. Drove it a few miles on two different days. On day two out of nowhere it reached 250 on my tmp gauge and I shut it down. Let it cool, restarted and drove it the 2 miles back to the house at a perfect 190. The next morning I noticed oil drops and saw rather wet oil around the #7 spark plug. I then checked the oil and it was for sure milky. I pulled the spark plug #7 and about a cup of coolant followed it all over my hand. Needless to say I shat myself.

The other plugs were all dry, number 6 had a tiny oil on it but no coolant. It definatley got hot each time we were fooling with the coolant and there were some serious drops that required more and a quart to get the radiator refilled. All but the last time I ran it it also bubbled and you could hear water moving around (b/c of air pockets no doubt). The last time I filled it that was taken care of (so I thought)

So where would you guys start?

383 Stroker, Edelbrock alum heads, air gap manifold
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post #2 of 27 (permalink) Old May 9th, 05, 03:29 PM
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Re: Milky Oil and coolant in #7, am I screwed or what?

head gasket, I hope





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post #3 of 27 (permalink) Old May 9th, 05, 03:34 PM Thread Starter
 
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Talking Re: Milky Oil and coolant in #7, am I screwed or what?

I sure hope so too but can that happen from heat???? Told you I was clueless
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post #4 of 27 (permalink) Old May 9th, 05, 03:40 PM
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Re: Milky Oil and coolant in #7, am I screwed or what?

A cup of water in the combustion chamber could have some very damaging effects.. Since water doesn't compress, something else has to give, such as a connecting rod or a piston. I would be real tempted to tear the engine down and inspect it to make sure nothing is amiss, and while I'm at it have the heads checked for cracks.

Water in the combustion chamber can come from a few causes, but the first thing I would suspect would be a bad head gasket. Next on the list would be a cracked head, and third would be a cracked block.

I guess I really didn't answer you question....but I'd err on the side of safet and protecting you investment.


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post #5 of 27 (permalink) Old May 9th, 05, 03:50 PM Thread Starter
 
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Re: Milky Oil and coolant in #7, am I screwed or what?

I hope a cup was an exageration but I have no way on knowing. I was planning on taking the head to get it checked. Should I pull the other side too?
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post #6 of 27 (permalink) Old May 11th, 05, 08:49 AM
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Re: Milky Oil and coolant in #7, am I screwed or what?

I wouldn't touch the other side just yet. When you take the head to your engine guy, take the head gasket along too. Hopefully, you didn't damage it too bad during disassembly because it can tell a story if you know what to look for.
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post #7 of 27 (permalink) Old May 11th, 05, 12:10 PM
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Re: Milky Oil and coolant in #7, am I screwed or what?

WAIT!! Before you go tearing the head off, start with the first things FIRST!

Have you performed a compression test yet? Change the oil & filter and then do that. Start with the cylinder in question, and then do each of the other cylinders on that bank.

He gave several clues that COULD lead you to believe it has a bad head gasket-and in the end it just might. But BEFORE he goes tearing the motor apart, check the obvious things first. In his original post it states "air gap manifold"... Okay, is that the one by EDELBROCK, or the knock-off put out by Perform-less Products?

If he has the knock-off he might have found his problem right there. Do a search under my user name and you will find that I had a very similar problem recently. Now where exactly is cylinder #7 located?? Oh yes, drivers side of the motor all the way at the rear.. And what is it next to? Oh yes, the water port in the end of the head.. And how well machined are the knock-off air gaps...... :-(

Change the oil and filter first, then perform the compression test. If the compr. test checks out okay, rent/borrow one of the cooling system testers that pressurizes the cooling system and check for leaks that way. If the pressure drops over time (can't remember what the instructions say) you may have found your problem.

Otherwise, the compression test is still a valuable diagnostic tool to determine/decide what is really happening within the motor and should be performed before a tear down.

Let us know what you find. Feedback is helpful to other members who might be experiencing the same, or similar problems as you in the future.

Good luck!

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post #8 of 27 (permalink) Old May 11th, 05, 06:36 PM Thread Starter
 
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Re: Milky Oil and coolant in #7, am I screwed or what?

Thanks GO69, I like that approach (compression test) and will try that next week when I can get my buddy up to do it. The intake is a genuine Edelbrock so I doubt that is it but you never know. I'll let you guys know the results of the comp. test.

Thanks - Dave
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post #9 of 27 (permalink) Old May 12th, 05, 11:05 PM
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Re: Milky Oil and coolant in #7, am I screwed or what?

The easiest way to tell a combustion leak (blown head gasket, cracked head or block) from a non combustion leak (intake manifold gasket, rocker stud etc) is to use a radiator exhaust gas tester like this one http://www.arrowheadradiator.com/hea..._leak_test.htm Once you have determined the type of leak then you can futher diagnois the problem.

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post #10 of 27 (permalink) Old May 19th, 05, 02:19 PM Thread Starter
 
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Re: Milky Oil and coolant in #7, am I screwed or what?

Ok I didn't want to take any chances so went ahead and pulled the head off. I see no visible cracks on the head and the gasket didn't look torn (there was a little blow by between the chambers on the head gasket but not much) However the gasket was wet all over and coolant was found in ALL FOUR chambers. No oil is mixed with it and there was no oil in my fluid when I drained the radiator. I have yet to pull the other head.

Anymore thoughts after that info? I'll pull the other side and take that and the manifold in to have them checked out I guess.
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post #11 of 27 (permalink) Old May 19th, 05, 02:56 PM
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Re: Milky Oil and coolant in #7, am I screwed or what?

did you pull the plugs at the bottom of each side of the block before you pulled the heads/

if not, that's where all that water came from. the lower edge of the head surface is much lower than the water pump, if you only drained from the radiator or lower hose, there was still enuf water in the block to flood everything.





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post #12 of 27 (permalink) Old May 19th, 05, 05:03 PM Thread Starter
 
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Re: Milky Oil and coolant in #7, am I screwed or what?

Jim are you talking freeze plugs or spark plugs? All the spark plugs were pulled
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post #13 of 27 (permalink) Old May 19th, 05, 05:52 PM
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Re: Milky Oil and coolant in #7, am I screwed or what?

He means the coolant drain plugs - one on each side of the block, about in the center, just above where the oilpan bolts up.


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post #14 of 27 (permalink) Old May 19th, 05, 08:28 PM Thread Starter
 
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Re: Milky Oil and coolant in #7, am I screwed or what?

Thanks Al, didn't even occur to me.
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post #15 of 27 (permalink) Old May 20th, 05, 12:23 PM
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Al
 
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Re: Milky Oil and coolant in #7, am I screwed or what?

Sometimes those drainplugs gan be a real #$stard to remove as they rust up pretty good. You can drain the block far enough for head removal by removing a lower water pump bolt.


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